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Optical Engineering

Spatial frequency characteristics of vessel geometry and densitometry in coronary arteriograms
Author(s): Ying Sun
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Paper Abstract

The vessel geometry and densitometry in single-view coronary angiograms are analyzed with an emphasis on the local features and how they vary along a vessel segment. With the aid of a tracking algorithm the two-dimensional contour of a vessel segment is represented by one-dimensional functions, in terms of lumen width, direction, and intensity along the vessel centerline. A quantitative validation of this contour representation approach is established by using the computer-generated imagery. The spatial frequency responses of the vessel contour functions are characterized for human coronary cineangiograms and for digital subtraction angiograms. The lumen width functions have 90% of the signal energy concentrating below a spatial cutoff frequency of 2.5 to 3.7 per average lumen width. The application of the contour representation to vessel image compression is demonstrated. The result of this study provides a guideline for spatial filtering of the coronary arteriograms. The methodology should also be useful in analyzing coronary arterial abnormalities and tortuosity.

Paper Details

Date Published: 1 October 1990
PDF: 5 pages
Opt. Eng. 29(10) doi: 10.1117/12.55710
Published in: Optical Engineering Volume 29, Issue 10
Show Author Affiliations
Ying Sun, Univ. of Rhode Island (United States)

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